Oil bubnek



liatented Aug. 21, 1928.

UNITED STATES JAMES H. JACKSON, OF DETROIT, MICHIGAN.

OIL BURNER.

Application filed July 2,

This invention relates to an oil burner, and has for its object an improved organination of parts by means of which a `very low grade of oil, even such waste as discarded crank case oil, may be employed for combustion purposes. The construction herein illustrated is of further advantage in that it departs from any reliance upon spraying, which, with the grade of oil in dit-ated, would be a difficult operatiomgravity feed alone being necessary to effect the purpose desired.

ln the drawings:

Figure l is a side elevational view lai'gely in section, showing my improved apparatus in position in a furnace shell.

Figure 2 is an enlarged sectional elevation of the heating or burner plate and its adjacent parts.

Figure 3 is a plan view from above of that portion of the device illustrated in Figure 2.

Figure 4 is a plan View partly in section, taken along the line l-ll of Figure l and looking in the direction of the arrows there shown.

Figure 5 is a plan View from beneath of the undersurface of the burner plate, bringing out the relation of the lugs to it and to the annular shoulder whereon they are designed to rest.

Figure 6 is an elevational view, similar to Figure l, of a slightly modified form of construction, wherein the appropriate contouring of the lower part of the furnace shell and of the grate bars enables the omission of the air inlet pipe as a separate elemental feature.

A indicates a furnace shell, through the bottom portions of whose wall extends an air inlet pipe B, controlled by a butterfly ball-let). Extending centrally of this pipe, for a portion of its length at least, is the supply or pilot pipe D, which, like the air pipe B, terminates at substantially the level of the grate bars F, whose central portion is cut-away for the passage of these pipes therethrough. Resting on the peripheral edge of this cut-away portion of the grate bars is the burner trough Gf, which consists of a pipe-surrounding collar H and an outer annular' portion J, between which is formed the oil trough G, from which waste oil may be drawn through the pipe L. Resting on the top of the inner collar H are a plurality of lugs, as M, which project from the bottom face of the burner plate N, thus 1927. Serial` No. 202,935.

providing an annular space P, whose continuity is interrupted only by the lugs M, through which the burner vapors may pass about the edges of the plate N. As brought out in Figures l and 2, the central portion K of the plate N is preferably of turret form, through thel sides of which are pierced burner holes O for the further egress of the combustion products induced by the gas pipe 1). The top surface of the turret portion K is corrugated or cross-hatched, as shown, to facilitate the flow of oil particles impinging thereon toward the periphery of the burner plate.`

Spacedly above the elements thus far described is positioned a cooling air pipe R, which passes through the wall A of the furnace and at its inner end turns downwardly. Supported from this inner end, as by struts S, is a baille T of inverted truncated conical form, its central portion being apertured as at T in axial alignment with the down turned inner end of the air pipe R and with the burner plate N and gas pipe D. A sleeve or guiding shell W extends through the hole T in the baffle, upwardly to above the level of the end of the oil pipe V, and downwardly to just above the level of the top edge of the outer annular wall J of the oil trough member, thus pre* venting the flames rising from the burner plate from igniting the oil immediatelv upon its emergence from the end of the oil pipe V. Spacedly positioned centrally of this air pipe R is the oil pipe V, whose downwardly turned end is adapted to discharge oil particles through the sleeve W and the hole T and onto the turret portion of the burner plate N. The feed through the oil pipe V may be from a superiorly positioned storage or supply source, thus making it a true gravity feed.

The burner plate having first been heated by the actionY of the flame from the pipe I), the oil supply. pipe V is then allowed to commence its dropping of oil particles on the heated top K of the turret portion of the burner plate, and these becoming ignited soon take up the major portion of the heatdelivering function of the burner, receiving the igniting gases both through the aperture P about the peripheral edge of the burner plate N and through the holes O in the sides of the turret. As the flames rise they are confined and forced outwardly and swirlingly by their' impingement upon the inclinedy surface of the bao T, and such particles as have not been ignited drop baelr into the trough constituted by the walls G and H and some are then subsequently ignited, While such others as are not .ignited may at the end of the burners operation be drawn away through the wastepipe Labore mentioned.

There is thus producedv a very efficient and economical burner construction which functions Very satisfactorily, both as regards the completeness of the combustion ellected and as regards the avoidance of any spraying action upon the oil particles, thanks to the grayity feed through the oil supply pipe V.

In the modified fonml of construction shown in' lligur'e G, in place of the air inlet pipe `By and the horizontal gratesin the forni of construction j ust described, l provide a preferably conicalY or outwardly sloping grate X, With suitable holes or spaces i through Whose center the pilot pipe D passes.

ln additiomthe lower portion' of the furnace shell Z is suitably shaped so as to form a funnel similar in function to the air inlet pipe B, the access of a-ir thereto from Without bei-ngy controlled by the damper or door Z".

llVhat I claim is l'. In an oil burner, in combination'with a gravity-fed supply pipe, a burner plate positioned subjacentl'y thereof onto which the Oil particles may fall from said supply pipe, an annular trough member spacedly surrounding said burner plate, means for releasing Waste oilparticles therefrom, a pilot flame pipe spacedly positioned beneath said burner plate, and an air inlet pipe spacedly surrounding said pilot flame pipe in position to regul-atably direct a current of air toward and about said burner plate.

2. lin anl oil burner, in combination with gravity-fed means for releasing oil in predetermined qua-ntities, a cool-ing pipe spacedly surrounding the delivery end of said oil pipe, an `aperturedr baffle member positioned in axial alignment With the endof said oil pipe and through which the oil particles re leased therefrom are adapted to pass by gravity, an oil-conlinin-g trough member positioned subjzaeently ofl said oil pipe and said baille member, a burner plate supported by selected portions of said oil trough mem- Leonesa ber in axial alignment with the oil supply pipe and said baille, and means for primarily heating said burner plate and for lherea ller delle-cling theretou'ards a supply el air Yfor commii'lgling with the oil particles alomixed by contact with said burner plaie.

An oil burner, having, in combination with a gravity-fed oil delivery pipe, an aperture/lf baille member positioned therebeneath in axial aliginnent, a burner plate spacedly subjacent said oil delivery pipe and said baille member, an annular trough inembcr whereby said burner plaie is sluuiorled` and means for heating said burner plat i and for inducing an upward {low of atmospheric air in the vicinity of said burner plate for commingling with the oil particles deposited thereon and distributed thereby.

d. lin oil burner, haring, in comliinaliim with a subjaecnt pilot burner and meansl spacedly engaging thereabout for directing a current of air upwardly, a burner plate and a spacedly encircling` oil troiuh speeedly positioned therealiove, and a gravil fed oil delivery member posil ioned above said burner plate in spaced axially aligned relation, and a baille member spacedly interposed between said burner plate and said oil delivery member, whereby the upwardly rising combustible gases may be given a swirling treatment to facilitate their further eonrnin glin'g.

ln an oil burner, the coinbinalion ol' au enclosing furnace shell, an oilaleli'rery pipe projecting interiorly thereof, a cooling` air pipe spaeedly surrounding said oil delivery pipe, a centrally perforated baille member spacedly positioned beneath said oil delivery pipe in axial alignment therewith, a burner plate positioned spa-eerily beneath said oildeliyery pipe and said baille, an annular trough member spacedly surrounding said burner member iny position to receive lhe surplus oil particles initially fallingr on said burner plate, a gas pilot member posilionml beneath said burner pla-te, and an air inlet pipe whereby a current of air may be upwardly guided adjacent said gas pilot member and said burner plaie. for comminglingr with the oil particles in the vicinity of l'he latter.

JAMES H. JACKSON.

till

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